Does the morning after pill affect HPV vaccine?

No, the morning-after pill does not affect the effectiveness of the HPV vaccine. The morning-after pill is a hormonal medication used to prevent pregnancy after unprotected sex. It works by preventing ovulation or by preventing implantation of a fertilized egg in the uterus. The HPV vaccine is a vaccine that helps protect against infection with the human papillomavirus (HPV), which can cause cervical, vaginal, vulvar, and anal cancers. It works by stimulating the body's immune system to produce antibodies that protect against HPV. The morning-after pill and the HPV vaccine are both safe and effective, and there is no evidence that either affects the effectiveness of the other.